92results about How to "Large output displacement" patented technology

The invention discloses an XYtheta three-degree-of-freedom large-stroke and high-frequency response precision positioning platform, which comprises a rigid base, wherein the inner side of the rigid base is connected with fixed ends at the outer sides of four double-layer diamond displacement amplification mechanisms separately; first rigid output ends at the inner sides of the four double-layer diamond displacement amplification mechanisms are connected with a flexible branch chain mechanism; a second rigid output end of the flexible branch chain mechanism is connected with a mobile platform; the center of the mobile platform is in rigid connection with a driven object through a threaded hole; the mobile platform, the flexible branch chain mechanism and the double-layer diamond displacement amplification mechanisms are rotationally symmetrical about the threaded hole; the first rigid output ends at the inner sides of the diamond displacement amplification mechanisms are connected with the rigid base through a rectangular beam; first rigid input ends of two sides of the diamond displacement amplification mechanisms are connected with piezoelectric ceramic; and the whole mechanism is formed by integrated processing of a steel plate through an electro-discharge machining process, a hollow cavity in the mechanism is processed to be transparent and an internal member of the hollow cavity is in a suspended state. Large-stroke and high-bandwidth high-precision displacement output can be achieved and the structure is simple and compact.

The invention discloses a symmetrical double-feet driving offresonance piezoelectric linear motor, comprising a stator, a casing of the stator, a mover guide rail, guiding adjusting mechanisms, a precompression apparatus and a base. The stator is fixedly connected in the casing to form an integrity; the front end of the casing is provided with the mover guide rail, the rear end is in connection with the precompression apparatus, and left and right ends are respectively in connection with the guiding adjusting mechanisms; the precompression apparatus is internally provided with a precompression spring; under the restoring force effect generated by the deformation of the precompression spring, the front end of the casing keeps contact with the mover guide rail; the mover guide rail, the precompression apparatus, and the guiding adjusting mechanisms are all arranged on the base; the stator is composed of a stator supporting board, and two symmetrical driving feet, lamination electroceramics, cushion blocks, long hinges, and pre-tightening screws. The symmetrical motor has a structure simple, is convenient to install, and effectively guarantees the bidirectional actuation performance consistency of a piezoelectric motor; certain electric signals are respectively applied to four sets of lamination electroceramics to realize the bidirectional rectilinear motion of the piezoelectric motor.

The invention discloses a precise micro motion platform based on a shape memory material coarse motion driver, belonging to a micro motion platform technology. A Y-directional coarse motion platform base, an X-directional coarse motion platform base, an X-directional coarse motion platform, an XY two-dimensional micro motion platform base, a Y-directional micro motion platform and an objective table are mounted on a base from bottom to top; the Y-directional micro motion platform is mounted in the X-directional micro motion platform through a Y-directional micro motion flexible articulated mechanism; the X-directional micro motion platform is mounted in the XY two-dimensional micro motion platform base through an X-directional micro motion flexible articulated mechanism and is driven by an X-directional piezoelectric micro motion driver and a Y-directional piezoelectric micro motion driver; and the X-directional coarse motion platform is matched with the X-directional coarse motion platform base through an X-directional coarse motion slide way and is driven by an X-directional shape memory material coarse motion driver and a Y-directional shape memory material coarse motion driver. The precise micro motion platform is simple and compact in structure, high in positioning precision and wide in application prospect and is easy to control.

The invention relates to a sticky-slip inertial linear actuator controlled by surface inclination friction, which relates to an actuator, comprising a flexure hinge amplifying mechanism, a piezoelectric stack actuator 1, a guide rail, a base and a mover; The flexure hinge amplifying mechanism is fixed on the base, the piezoelectric stack actuator 1 is installed in the flexure hinge amplifying mechanism, the piezoelectric stack actuator 1 is pre-tightened by a pre-tightened connector which is screwed on the flexure hinge amplifying mechanism, and the guide rail is a hollow structure which is closed at both ends; The guide rail is internally machined with a triangular amplifying mechanism in which a piezoelectric stack actuator (2) capable of adjusting the inclination angle of the guide railis mounted, a mover is arranged on the guide rail, and a friction material layer with self-lubricating characteristics in contact with the guide rail is fixedly connected on the surface of the mover.The invention has the advantages of large output force and displacement, compact structure, stable operation and bi-directional operation with load, and has wide application prospect.

The invention provides a horizontal and vertical multi-dimensional vibration isolation and energy consumption system of a prefabricated assembling type cantilever framework. The system is mounted between an upper structure and a lower structure, and a gap for allowing the system to vibrate vertically is formed; the system comprises a horizontal vibration isolation subsystem and a vertical vibration isolation subsystem; the horizontal vibration isolation subsystem is located above the vertical vibration isolation subsystem and is composed of a horizontal slide support and SMA spring limiting devices; the SMA spring limiting devices are uniformly distributed in the radial direction and are connected with the horizontal slide support in parallel to work; the vertical vibration isolation subsystem is composed of a plurality of single-truss cantilever frameworks; the horizontal plane of each single-truss cantilever framework is internally connected with SMA rods which are distributed in an X shape. The horizontal vibration isolation subsystem and the vertical vibration isolation subsystem are coupled through a slide block of the horizontal slide support to form a multi-dimensional vibration isolation mechanism. The system can be used for effectively absorbing three-dimensional seismic oscillation, and is high in damping capability and reliable in performance, and can be automatically reset.

The invention discloses an X, Y and theta plane three-freedom-degree precision positioning platform. The X, Y and theta plane three-freedom-degree precision positioning platform comprises piezoelectric ceramic, composite rhombus displacement amplification mechanisms, bridge type displacement amplification mechanisms, a motion platform and a fixing frame. The piezoelectric ceramic is installed in the composite rhombus displacement amplification mechanisms, and the four composite rhombus displacement amplification mechanisms are arranged in parallel and located at the four corners of the fixing frame; and the motion platform is located at the center of the fixing frame, and the two side faces of the motion platform are connected with the composite rhombus displacement amplification mechanisms located on the two sides of the motion platform through the two bridge type displacement amplification mechanisms. Through the combination of the four composite rhombus displacement amplification mechanisms and the two bridge type displacement amplification mechanisms, the X, Y and theta plane three-freedom-degree precision positioning platform has two transverse motion freedom degrees and one rotation freedom degree; and through combination of two-stage displacement amplification and different drives, three-plane-freedom-degree motion is achieved, the structure of the platform is simple and compact, and the output displacement is large.

The invention provides an automatic impedance matcher for a magnetostrictive transducer. The automatic impedance matcher comprises an impedance matching module, a signal collection module, a feedbackmodule, and a single-chip microcomputer control module; the impedance matching module comprises two sets of 8-channel 5V relay modules with optocoupler isolation functions, a 5V DC power supply, 16 CBB matching capacitors and 16 resistors with resistance of 1kohm; the two sets of relay modules have the same structure and respectively comprise 8 relays connected in parallel; DC + and DC- Ports of each set of relay modules are connected to a positive electrode c and a negative electrode d of the 5V DC power supply respectively; and an assorted H jumper cap is respectively inserted into each of high and low level trigger selection ends S1 to S16 of each relay. The automatic impedance matcher provided by the invention enables the transducer to continuously and stably work in a resonant state under different environments, working conditions and loads, thereby significantly improving the working efficiency of the transducer.

The invention discloses a lever amplification based alternative stepping piezoelectric linear motor. Lamination piezoelectric ceramic is taken as a main driving component, the position of the lamination piezoelectric ceramic on a stator combination body is reasonably arranged, the displacement of the lamination piezoelectric ceramic is amplified and output by a lever mechanism and a hinge mechanism, so that the piezoelectric linear motor can output relatively high linear speed and a push force, theoretically has equal bidirectional output performance, can generate relatively large travel, and is high in accuracy and high in stability. By the lever amplification based alternative stepping piezoelectric linear motor, the problems of relatively low motor output stability caused by relatively small displacement of the lamination piezoelectric ceramic and a processing error in the prior art are solved.

Disclosed is ammunition with a head capable of deflecting and based on a smart material driver. The ammunition with the head capable of deflecting and based on the smart material driver comprises an ammunition head, an ammunition body, a smart material driver and a positioning system. The main body part of the ammunition is connected with a spherical protrusion of the surface on the upper end of the ammunition body through a spherical groove at the bottom of the ammunition head; four guide grooves are formed at the bottom of the ammunition head, wherein the guide grooves penetrate through the center of the circle of the ammunition head and are communicated with the spherical groove; sealing pins, springs and rolling balls are placed in the guide grooves to fasten connecting portions; under the impact of certain electrical signals, the smart material driver is deformed through information fed back by the positioning system to put the ammunition head to deflect, and therefore changing of motion locus of the ammunition is achieved. The ammunition with the head capable of deflecting and based on the smart material driver is large in deflection angle and is finally wide in attack ranges, reduces consumption of smart materials, saves space capable of placing a microprocessor and a small-size power supply, is compact in the whole structure, and therefore achieves microminiaturization, high accuracy and low energy consumption of independent and self-adaptation attack ammunition.

The invention discloses a shape memory alloy thermal machine driving device and belongs to the technical field of electromechanical equipment. The shape memory alloy thermal machine driving device comprises shape memory alloy thermal machines mounted on a base plate. The shape memory alloy thermal machines are connected with belt transmission mechanisms through movable pulley mechanisms; the belttransmission mechanisms are connected with spindles through one-way bearings, and the other ends of the spindles are connected with vertical bearing seats; and the shape memory alloy thermal machinesare connected with a thermal machine control system. The shape memory alloy thermal machine driving device has the beneficial effects that the advantages of simple mechanical structure, large output displacement and the like are achieved; by additionally arranging the movable pulley mechanisms, the output displacement of shape memory alloy springs is enlarged by nearly two times, and by additionally arranging the belt transmission mechanisms, driving performance can be improved easily; and a new design scheme is provided for a shape memory alloy thermal machine driver.

The invention provides a giant magnetostrictive material-based rocking head type micromotor, which comprises a stator, a rotor and a precompression system, wherein the stator comprises a magnetic deformation body and a metal base body; a magnetostrictor body extends along the magnetization direction under the action of the applied magnetic field; two first-order bending vibration modes with a certain included angle in space are excited on the stator; the motion track of a mass point on a contact drive end surface of the stator and the rotor is an ellipse; the rotor runs through the hollow stator and is pressed on a drive end of the stator under the action of the precompression system; and the stator drives the rotor to rotate through friction. According to the giant magnetostrictive material-based rocking head type micromotor, wireless driving is achieved by external magnetic field excitation; microminiaturization is easy to achieve; and a piezoelectric material body is used for monitoring the running state of the motor in real time, and can also be used as a magnetoelectric conversion unit for achieving wireless energy supply and the like. The giant magnetostrictive material-based rocking head type micromotor is especially suitable for the occasions, such as the fields of medical diagnosis, robots and the like, which require accurate positioning.

Disclosed is a large-displacement high-frequency-response three-degree-of-freedom piezoelectric driving precise locating platform. The locating platform comprises a rigid base. The two sides of the rigid base are connected with one first rigid output end of a rhombus displacement amplifying mechanism. The other first rigid output end of the rhombus displacement amplifying mechanism is connected with one second rigid input end of a bridge-shaped displacement amplifying mechanism. Piezoelectric ceramics are connected to two first rigid input ends of the rhombus displacement amplifying mechanism. The rhombus displacement amplifying mechanism forms a flexible mechanism based on the triangulation principle through connection of a flexible arm, the two first rigid input ends and the two first rigid output ends. The bridge-shaped displacement amplifying mechanism is an arch-bridge-shaped flexible mechanism composed of two flexible beams, two second rigid input ends and a first second rigid output end. The two symmetrical flexible beams form bevel edges of the bridge-shaped displacement amplifying mechanism. Through the locating platform, large-stroke high-bandwidth high-precision displacement output can be achieved, and the structure is simple and compact.

The invention discloses an active vibration control system of a flexible structure based on a voice coil motor and a method thereof, wherein the system comprises a main support rod fixed on the ground, a rail is fixed on the main support rod, left and right oblique rods on both sides of the rail are symmetrically fixed to the main support rod, left and right large displacement actuators adjacent to the left and right oblique rods are fixed on both sides of the main support rod when the rail is as a symmetry axis, both sides of the other end of the rail are symmetrically fixed with stationary fixtures on which fixed pulleys are mounted, and the top of the rail is provided with the flexible structure; the other ends of the left and right oblique rods are connected with positioning fixtures on which hole bolts are mounted, the fixed pulleys, the hole positions of the hole bolts and the left and right oblique rods are located on the same plane, and a rigid rope passes through the left large displacement actuator, the fixed pulleys and the holes of the hole bolts; besides, the invention further discloses a control method of the system; the active vibration control system outputs large displacement and greater control force through the voice coil motor, a control direction is shifted by the pulleys such that the active modal vibration control of the flexible structure can be realized.

The invention relates to a magnetostriction type jiggle clamp, which comprises an upper jaw (1) and a lower jaw (2). The front ends of the upper jaw and the lower jaw are provided with a clamp mouth (3); the jiggle clamp also comprises an upper cantilever (4), a lower cantilever (5), a connecting arm (6), an ultra-magnetostriction material bar (7) and a solenoid coil (8) used for providing a magnetic field for the ultra-magnetostriction material bar; the upper cantilever and the lower cantilever are connected through the connecting arm, the tail ends of the upper jaw and the lower jaw are connected with one end of the upper cantilever, and a flexible hinge for the lower jaw to rotate to the direction of the upper jaw is arranged between the lower jaw and the upper cantilever; the ultra-magnetostriction material bar is propped between the lower jaw and the lower cantilever; and the lower jaw, the upper cantilever, the lower cantilever and the connecting arm are made of magnetic conducting materials. The magnetostriction type jiggle clamp of the invention has the advantages of large clamping range, large clamping force, high response speed, and easy control for precision.

The invention discloses a single-driving type pure rotating and micro-positioning platform. The single-driving type pure rotating and micro-positioning platform comprises an active driving mechanism and a passive compliance mechanism, wherein the active driving mechanism comprises a base I, and a guide mechanism which is driven through piezoelectric ceramics; each of two ends of the guide mechanism is connected with a vertical reversing amplifying mechanism; the vertical reversing amplifying mechanisms are connected to lever amplifying mechanisms I through flexible connecting blocks, and moving connecting blocks I are arranged at output ends of the lever amplifying mechanisms I; the passive compliance mechanism comprises a base II which is connected to be above the base I; a moving platform is arranged in the base II and is connected to the base II through an upper reinforcing plate spring and a lower reinforcing plate spring; each of the upper end and the lower end of the moving platform is provided with an input end which is connected with an output end of a movement transmission flexible rod; the input end; the input end of the movement transmission flexible rod is connected with the output end of one lever amplifying mechanism II; the input end of each lever amplifying mechanism II is provided with a moving connecting block II which is connected to the corresponding moving connecting block I. The single-driving type pure rotating and micro-positioning platform is simple and convenient to control, and high in rotating accuracy.

The invention discloses a novel actuator provided with a two-stage amplification mechanism and that provides an axial magnetic field with bars. The novel actuator comprises a non-magnetic-conductive shell, a magnetic-conductive frame, a magnet exciting coil, a combined body, the two-stage micro-displacement amplification mechanism and an output rod. The magnet exciting coil is sleeved outside thecombined body and is placed in the magnetic conductive frame, and the magnetic conductive frame and the combined body form a closed magnetic circuit; the magnetic conductive frame is arranged in the non-magnetic conductive shell; one end of the combined body is connected with the magnetic conductive frame, the other end of the combined body is connected with the input end of the two-stage micro-displacement amplification mechanism; the combined body is used for transmitting displacement to the two-stage micro-displacement amplification mechanism, the fixed end of the two-stage micro-displacement amplification mechanism is connected to the magnetic conductive frame, the output end of the two-stage micro-displacement amplification mechanism is connected with the rear end of the output rod, and the front end of the output rod extends out of the non-magnetic shell; the two-stage micro-displacement amplification mechanism amplifies the displacement of the combined body and transmits theamplified displacement to the output rod; and the output rod is used for outputting the displacement. The output displacement of a driver is increased, and the size of the driver is reduced.

The invention discloses a method for dynamic repairing of metal electrodes in an IPMC driving process, and is particularly illustrated by an example of repairing of a platinum type IPMC metal electrode. The metal type IPMC is prepared by a chemical plating method; copper ions are used as driving ions and dynamic repair ions; the migration of hydrated copper ions in a base membrane is used for providing an output force for the IPMC, and at the same time, a continuous reduction reaction of the copper ions in an alternating electric field is used for self repairing of a metal layer of a platinumelectrode. A technological process comprises the steps: (1) preparation of a traditional metal electrode type IPMC; (2) preparation of a dynamic repairing ionic liquid; (3) a dynamic repairing ion exchange process; (4) a metal electrode dynamic repairing process; and (5) preservation of a sample. In the premise without increasing the cost, the electrical conductivity and output performance of theIPMC electrode are obviously improved. Experiments prove that the output performance of the IPMC after dynamic repairing is obviously improved, and the method is also suitable for electrode repairingfor a gold type IPMC, a palladium type IPMC and a silver type IPMC, and has great promotion value.

The invention provides an SMA-spring-driven flywheel repeatable locking mechanism. The SMA-spring-driven flywheel repeatable locking mechanism comprises two sets of SMA-spring driving assemblies, twosets of lock column-wedge block units, a connecting rod, a sliding block and the like. An unlocking SMA wire-jacking spring is used for driving the locking process and the unlocking process, a triggering and locking SMA wire-unlocking keeping spring is used for controlling the unlocking state, a jacking spring simultaneously drives the left and right sets of lock column-wedge block units through the sliding block, the sliding block is connected with a wedge block through a connecting rod, and the wedge block is matched with the bottom surface of the lock column; in the locking process, the sliding block moves forwards to drive the wedge block to move outwards, and the lock column is pushed to move upwards to make contact with the flywheel. During releasing, the unlocking SMA wire is powered on and contracted, the sliding block moves backwards to drive the wedge block to move inwards, and the lock column moves downwards to be separated from the flywheel. And when locking is conducted again, the triggering and locking SMA wire is powered on, so that the triggering and locking SMA wire contracts and pulls out of the limiting block, limiting on the sliding block is relieved, and the mechanism can be locked again. Repeated locking can be achieved, synchronism is high, and vibration resistance and impact resistance are high.

The invention discloses a super magnetostrictive actuator. The actuator comprises a shell and a base arranged at the bottom of the shell; a magnetic field generating device, a cooling device, a pre-tightening device and a positioning device are arranged in the shell 1; and the actuator also comprises a detection device used for carrying out performance detection on the super magnetostrictive actuator. According to the invention, a water cooling mechanism and a phase-change material are combined for carrying out temperature control, the water cooling mechanism is used for cooling the outer sideof a coil, and the phase-change material is used for cooling the inner side of the coil, so that the output precision of the giant magnetostrictive actuator is improved, and long-time stable work isguaranteed; the size is small, the weight is light, the output displacement is large, and the output force is large; the pre-pressure and the bias magnetic field are adjustable; the output displacement is big and output force linearity is good; the response speed is high, the control precision is high, and the eddy current groove can further improve the control precision of the output displacement; and meanwhile, a test system composed of a sensor, a signal amplification device and a computer is used for detecting the driving performance of a driver, so the test time is short, and the test efficiency and the test precision are high.

The invention relates to a dynamically-combined helical driving device. A supporting seat (8) is internally provided with a motor (9) which is axially provided with an engaged inner core (7); and the engaged inner core (7) is provided with a supporting helicoid (1) with a connecting helicoid (2) through a supporting helical guide wheel (3). Positioning teeth (11) are arranged at the upper edge and the lower edge of the supporting helicoid (1). The upper edge and the lower edge of the connecting helicoid (2) are provided with positioning holes (21). The connecting helicoid (2) is helically sleeved on the supporting helicoid (1) and the positioning holes (21) and the positioning teeth (11) are in butt joint and are fastened tightly. The connecting helicoid (2) is provided with an engaged outer core (5) which is connected with the engaged inner core (7) through a connecting rod (6). By the invention with the structure, screws with different heights can be formed by controlling the screwing turns; and the volumes of two helicoids can be substantially reduced, thereby providing an effective solution for meeting long-stroke heavy load linear drive.